ZyXEL Communications 70 Series - Manual (Page 309)

ZyWALL 5/35/70 Series User’s Guide
309 Chapter 19 VPN Screens
19.3 My ZyWALL
My ZyWALL identifies the WAN IP address or domain name of the ZyWALL (if it has one)
or leave the field set to 0.0.0.0 when the ZyWALL is in router mode. This field displays the
ZyWALL’s IP address when the ZyWALL is in bridge mode. The ZyWALL has to rebuild the
VPN tunnel if the My ZyWALL IP address changes after setup.
19.4 Remote Gateway Address
Remote Gateway Address is the WAN IP address or domain name of the remote IPSec router
(secure gateway).
Table 94 ESP and AH
ESP AH
Encryption DES (default)
Data Encryption Standard (DES) is a
widely used method of data encryption
using a secret key. DES applies a 56-bit
key to each 64-bit block of data.
3DES
Triple DES (3DES) is a variant of DES,
which iterates three times with three
separate keys (3 x 56 = 168 bits),
effectively doubling the strength of DES.
AES
Advanced Encryption Standard is a
newer method of data encryption that
also uses a secret key. This
implementation of AES applies a 128-bit
key to 128-bit blocks of data. AES is
faster than 3DES.
Select NULL to set up a phase 2 tunnel
without encryption.
Authentication MD5 (default)
MD5 (Message Digest 5) produces a
128-bit digest to authenticate packet
data.
MD5 (default)
MD5 (Message Digest 5) produces a
128-bit digest to authenticate packet
data.
SHA1
SHA1 (Secure Hash Algorithm) produces
a 160-bit digest to authenticate packet
data.
SHA1
SHA1 (Secure Hash Algorithm) produces
a 160-bit digest to authenticate packet
data.
Select MD5 for minimal security and SHA-1 for maximum security.